Multi-rotor aircraft are related to those "Drone" devices making all those fantastic aerial movies. Except, they use quite a few more motors and propellers, and in some cases they carry passengers. Electric manned flight is happening, and it may happen faster than we expect.

The second is a gentleman with a german accent flying a vehicle in a forest, presumably on his own property. He recently posted a video showing the first flight of his multi-rotor design, and today's video shows a tuning test-flight. He flew for 11 minutes achieving 80% depth of discharge, indicating more flight time than the previous video. For previous coverage see Very cool Manned multirotor helicopter-like -First Flight!

Kitty Hawk Flyer in San Francisco Flight Two Takeoff to Landing - YouTube